The theory and practice of modern framed structures : designed for the use of schools, and for engineers in professional practice (1897)
Johnson, J. B. (John Butler), 1850-1902, Bryan, C. W. (Charles Walter), 1863-1927, Turneaure, Frederick Eugene, 1886- · New York : J. Wiley & Sons · leaf 66
endingmoment at 6 is given by cc, the ordinate to the parabola (poledistance = unity) ; but for piece 6-i>, with centre of momentsat 7, the bending moment is given by dd. Where the upperjoints arc over the centres of the lower panels the moments atthe upper joints are means between the moments… … the moment at 6 ^{A6 X 6j9); moment at 4 = -{AA X aB)\ etc. These moments when2 2 divided by the lever-arms of the respective pieces give stresses. If the panel lengths are all equal to d, and m be the number of panels to the left and ni the number to the right of the centre of moments, then we…